Machine for cutting, skiving, and splitting leather or the like.



P. HELDMANN.

MACHINE FOB. CUTTING, smvma, AND SPLITTING LEATHER on THE LIKE.

APPLICATION FILED OUT. 20, 1908. 95x 2 Patented Apr. 19, 1910.

Wn'NEssEs ATTORNEY.

UNITED STATES PATENT OFFICE.

PETER HELDMANN, OF FRANKFORT-ON-THE-MAIN, GERMANY, ASSIGNOR TO MOENUSMACHINE WORKS LTD., OF FRANKFORT-ON-THE-MAIN, GERMANY.

MACHINE FOR CUTTING, SKIVING, AND SPLITTING LEATHER OR THE LIKE.

To all whom it may concern:

Be it known that I, PETER HELDMANN, a subject of the Grand Duke ofHesse-Nassau, residing at 18% Kettenhofweg, Frankforton-the-Main, in theKingdom of Prussia and Empire of Germany, have invented new and usefulImprovements in and Relating to Machines for Cutting, Skiving, andSplitting Leather or the Like, of which the following is aspecification.

This invention relates to machines for cutting skiving and splittingleather, and more particularly to machines of the type employed formaking successive cuts having difierent profiles.

The skiving and splitting machines heretofore employed for making cutspresenting different profiles either have interchangeable cutters tocorrespond to the profiles of the cuts to be made, or interchangeablework supports adapted for holding up the leather to a cutter. Machinesso constructed do not meet the requirements of the present day in themanufacture of leather goods by reason of the fact that much time andtrouble must be expended in removing and fixing the aforesaid parts inposition on the machine, to enable successive cuts having differentprofiles to be made. If, for example, several different bevels or splitshave to be made on one and the same piece of work, as is often the casein practice, the operator must either remove the cutter of the worksupport and substitute another after every out, or when there are anumber of pieces of leather to be dealt with, he must, in order toobviate such constant changing, take every one of the pieces of leatherin hand a number of times corresponding to the number of the variousprofiles to be out.

The inconveniences indicated are obviated by the present invention,which consists in the employment of a group of differently profiled worksupports arranged upon a car rier in such a manner that any one of thesupports may be instantly moved into position to hold the leather up tothe cutter. The profile of the out can thus be changed as requiredwithout loss of time.

In the accompanying drawing this invention is represented by way ofexample.

Figure 1 is a side elevation, and Fig. 2 a

front elevation partly in section of one ar- Specification of LettersPatent.

Application filed October 20, 1908.

Patented Apr. 19, 1910.

Serial No. 458,715.

rangement of work supports in a group.

Figs. 3 and 4 show respectively side and front elevations of a modifiedarrangement, and Fig. 5 is a side elevation of a further modification.

The Work supports 1 arranged in the group may be varied in .number. InFigs. 1 and 2 they are in the form of rollers having the desiredvariations in their longitudi' nal sectional shapes, and they aremounted upon a disk-like carrier 2 secured upon the machine standard 3by a bolt 4 so that it can rotate upon this bolt. In the part 3 holes 5corresponding in number to the number of supports 1 are bored, into anyone of which, according to the particular support to be put intooperative position, the end 7 of a pin 6 mounted in the carrier 2 isinserted, a spring 8 retaining it therein. On withdrawing the part 7 ofthe pin from the hole 5, the carrier 2 can be turned around the bolt 4,thus enabling any of the other work supports to be moved into theposition to hold the leather up to the cutter 9, a spring presser orwork-feeding member 10 serving to hold the leather firmly down on saidsupport.

Figs. 3 and 4: show another constructional form of the invention. Thecarrier 2 in this instance forms a band or belt which is guided overrollers 11 and 12. For the purpose of maintaining any one of the worksupports 1 in its operative position, each of the said supports isformed with an aperture 14, and a pin 13 is supported in part in thestandard 3 and is adapted to be passed through the aperture 14 in thework support to be used.

In Fig. 5 the carrier 2 constitutes a chain which is guided over achain-wheel 15.

I claim:

1. In a machine of the character described, the combination with worksupports arranged in groups, a disk-like carrier therefor, a support forsaid carrier provided with holes corresponding in number to the numberof work supports, a pin mounted on the carrier for engagement with oneof said holes, a spring acting on said pin, and a cutter and workfeeding member for cooperation with said work supports.

2. In a machine of the character described, the combination with worksupports arranged in groups, a disk-like carrier l rier being in theform of an endless hand,

therefor, a support for said carrier proand guide rollers therefor. 10vided With holes corresponding in number to In testimony whereof Ihereunto afiix my the number of Work supports, a pin mounted signaturein presence of two Witnesses.

on the carrier for engagement with one of PETER HELDMANN.

said holes, a spring acting on said pin, and lVitnesses:

a cutter and Work feeding member for 00- JEAN GRUND,

operation With said Work supports, said car- CARL GRUND.

